Suction box top for a paper making



Oct. 16, 1934. J PROULX SUCTION BOX TOP FOR A PAPER MAKING MACHINE FiledMarch 24, 1933 Je Prov! W Patented Oct. 16, 1934 SUCTION BOX TOP FOR A 1MACHINE PAPER MAKING Jean Proulx, Gatineau Point, Quebec, CanadaApplication March 24, 1933, Serial No. 662,556

4 Claims.

This present invention relates to certain'new and useful improvements ina suction box top for a paper making machine.

The primary object of the invention resides in 5 the provision of asuction box top for a paper making machine which is of generallyimproved and simplified construct-ion and increased efliciency.

The invention has for another object the pro vision of a suction box topfor a paper making machine of the character stated which is constructedin diagonally transverse sections which may be readily replacedindependently of one another, when required.

The invention has for a further object the provision of a suction boxtop for a paper making machine of the character stated which isccnstructed of a series of slightly graduated transverse sections whichmay be individually replaced when worn or otherwise damaged, thusobviating the necessity of replacing the complete suction box top.

The invention has for a still further object the provision of a suctionbox top for a paper making machine of the character stated in which thetop is constructed in transverse sections in the form of end wood blocksor hard wood end grain blocks with the suction openings extendedvertically therethrough with the grain and arranged in diagonal rows.

The invention has for a still further object the provision of a suctionbox top for a paper making machine of the character stated in which thewear on the sectional suction box top is reduced to the minimum owing tothe suction box top being constructed in transverse sections with thegrain running vertically of the sections constructed from hard wood andthe suction openings arranged in diagonal rows through the sections andthe upper ends of the suction openings countersunk.

The invention has for a still further object the provision of a suctionbox top for a paper making machine of the character stated which may bemanufactured at small cost and supplied at a reasonable price with goodprofit with each section of the block or top replaceable individuallywithout difficulty and at small expenditure of time and labor.

To the accomplishment of these and related objects as shall becomeapparent as the description proceeds, the invention resides in theconstruction, combination and arrangement of parts as shall behereinafter more fully described, illustrated in the accompanyingdrawing and pointed out in the claims hereunto appended.

The invention will be best understood and can be more clearly describedwhen reference is had to the drawing forming a part of this disclosure,wherein like characters indicate like parts throughout the severalviews.

' In the drawing:-

".Figure'l is a perspective View of the complete; suction box top, inposition;

Figure 2 is a transverse section through the suction box top, takensubstantially on the plane of line 2-2 of Figure 1 looking in thedirection indicated by the arrows;

Figure 3 is a longitudinal section, take substantially on the plane ofline 33 of Figure 1, looking, in the direction indicated by the arrows;

Figiue 4 is a detail fragmentary plan of the suction box top; and

Figure 5 is a detail perspective of one of the sections, removed.

Referring more in detail to the drawing, it will be noted the suctionbox top is constructed in a plurality of diagonally transverse blocksections A, B, C, etc., which have their ends 6 oppositely inclinedwhile their longitudinal side faces 7 are parallel and vertical. Thebottom 8 of each block section is fiat and also the top 9 or upper face.The block sections A, B, C, etc., are all I constructed from hard woodwith the grain running substantially vertically though preferably at aslight angle to the vertical and inclined the length of the block toextend in the direction of travel of the screen. Said block sections A,B,

C, etc., gradually taper in width from one end of the suction box 12 tothe other thereof or transversely of the paper making machine so thateach block section A, B, C, etc., is of a slightly different size and issuitably marked to permit ready placing of the different block sectionsin proper position. Through each of the block sections A, B, C, etc.,vertical suction openings 10 are provided in diagonal rows with theupper ends 11 of the suction openings 10 countersunk. The various blocksections A, B, C, etc., are secured in position on the suction box 12 byappropriate seeming and retaining means 13 and as the block sections A,B, C, etc., are constructed of hard wood with the grain runningvertically thereof and the top or upper faces of the block sections A,B, C, etc., all smooth and flush with the upper ends 11 of the suctionopenings 10 countersunk, the pulp carrying belt or screen 14 operatesover the suction box top efficiently with the minimum damage to the beltor screen 14 nection with the accompanying drawing, it will be manifestthat a suction box top for a paper making machine is provided that willfulfill all the necessary requirements of such a device but as manychanges could be made in the above description and many apparentlywidely diiferent embodiments of the invention may be constructed withinthe scope of the appended claims without departing from the spirit orscope thereof, it is intended that all matters contained in the saidaccompanying specification and drawing shall be interpreted asillustrative and not in a limitative or restrictive sense.

' Having thus described the invention, what is claimed is:

1. A suction box top for a paper making machine constructed from aplurality of diagonally transverse blocks having their ends inclined andgradually tapered and each provided with diagonal rows of verticalsuction openings with'their. upper endscountersunk.

2. A suction box top for a paper making machine composed of a pluralityof end wood blocks extending diagonally across the suction box and ofgraduated size, tapering from one end of the box to the other; said endwood blocks having diagonally arranged vertical suction openingstherethrough with countersunk upper ends; said end wood blocks beingindividually replaceable.

3. A suction box top for a paper making machine composed of a pluralityof tapering transversely directed blocks having the grain running at aslight angle to the vertical and inclined the length of the block toextend in the direction of travel of the screen.

4. A suction box top for a paper making machine composed of a pluralityof diagonally transverse blocks having their ends inclined downwardlyand outwardly and of graduated size gradually tapering longitudinally ofthe suction box; diagonal rows of vertical suction openings withcountersruik upper ends in said blocks; in-

wardly inclined side walls on opposite sides of said suction boxgradually converging through. out their length and adapted to holdtherein said suction blocks of graduated size from one end of thesuction, box to the other and end blocks removablymounted on oppositeends of said suction box having their inner ends tapered to conform withthe sides of said diagonally transverse blocks and adapted to retainsaid blocks longitudinally on said suction box.

JEAN PROULX. [L. S.]

